Storage-battery-cell cover



Dec', i6, i924. w? P. M. MARKO STORAGE BATTERY CELL COVER Filed Aprill2, 1921 Vial il l l A 35 30 24 30 y f4 e@ 35 i Vicki Patented Dec. 16,1924.

UNITED STATES PAUL M. MARKO, F BROOKLYN, NEW YORK.

STORAGE-BATTERY-CELL COVER.

Application led April 12, 1921. Serial No. 460,717.

To all whom t may concern Be it known that I, PAUL'M. MARKO, a citizenfof the United States, and a resident of the city of New York, boroughof Brookl n, n the 'county of Kings and State of ew York, have inventeda new and Improved 'Storage-Battery-Cell Cover, of which the followingis a full, clear, and exact description.

This invention relates to storage battery cells, and hasparticularreference to covers for such devices.

Among the objects of the linventionis to provide improved facilities forlocking the plates and cover together; to provide im? proved splashcover and electrolyte gage;

and, finally, to generally improve theconstruction of the cell coverboth for individual cell purposes and the assembly of a plurality ofcells in the construction of a battery.

With the foregoing and other objects in view, the invention consists inthe arrangement and combination of parts hereinafter described andclaimed, and while the invention is not restricted to the exact detailsof construction disclosed or suggested herein, still, for the purpose ofillustrating a practical embodiment thereof reference is had to k theaccompanying drawings, in which like reference characters designate thesame v parts in the several views, and in which-i Figure 1 is a verticalcentral section of a cell and its cover` complete; and

Figure 2 is ia plan view of the splash cover. r

Referrin now more specifically to the drawings, show a cell( cup `1Omade of any suitable on-,corrodible material, the same being as usual ofany suitable size or proportions and of rectangular form. The positiveandnegative posts 11 and 12 of the plates 13 and 14 extend upward asusual above the top of the cell cup and the several plates arranged inalternation are separated by wood or other fibrous plates 15. Theterminals or bindin posts 11 and 12 are provided at their s oulderportions 16 where they are connected to the several metal plates withhorizontal kerfs 17 on the same level, such level being just above thedesired level of the electrolyte indicated at 18. These kerfs are formedon the inner or opposed sides of the binding posts and so constitute.seats for electrolyte. U 'vided witha plurality'of longltudmal and theend portions of the splash cover and.

horizontal flange 23, these features beingv adapted to support conicalgaskets 24 of any suitable material. the binding posts are threaded at25 for the accommodation of binding nuts 26 of any suitable butnon-corrodible metal. or its equivalent, and above these threaded'portions 2,5 of the binding posts the upper ends thereof are taperedand preferably smooth and one of larger diameter than the other asplainly shown at 26 and 27.

The cover 28 is preferably .of one piece of any suitable material thatwill not be acted upon by the acids of the battery or otherwisedeteriorate. The cover is provided with a reinforcement or sti'enngflange 29 which is dropped down within the upper end of the cup andadaptedto bear with a fairly snug t against the inner walls of the cupin practice just above the level of the The cover is furthermoreprotransverse ribs 30 for reinforcement and stiifening purposes. At thecenter of the cover l providean internally threaded boss 31, thelopening through which is directly above the hole 20. At about the centerof each end of the cover I provide a downwardly projecting boss 32having a hole constituting a counterpart of the frusto-conical shoulderand gasket 24 adapted to be pro- Above these shoulders jected thereintowith a snug fit. rlhe cover is locked in the place indicated withrespect to the binding posts by means of the lock nuts 26 abovedescribed, the same bearing downward snugly against the top surface ofthe cover and serving todraw the cover downward with a snug liquid tightt upon the shoulders 21 and 22. After the parts are assembled in themanner just described and illustrated, the space between the downwardlyprojecting flange 29 of the cup is filled with cement 33 of any suitablenature` making a positive seal between the cover 'and the cup andleaving no openings or vents except through the threaded boss 31.

The ventplug 34 is constructed with a hollow body, the lower end ofwhich is threaded at 35 for engagement in the allel tins 37 for easymanipulation of the plug. The upper and lower ends 'of the hollow bodyare guarded by diaphragms 38 and 39 respectively, the upper one having acentral vent 38', while the lower one has a plurality of spaced vents 39out of registry with one another and the hole in the splash coverbelow.. Any gases'or fumes that may be generated within the cell havefree exit through the vent holes through the plug, but because of thestaggering relation of these featuresthe cell as a whole is practicallynon-leakable. The main splash of -the electrolyte within the cup'isguarded by the splash cover 19, but any acid that may reach the bottomof the plug will pass through the vents 39 in ve small quantities if atall, and if any of t e acid should enter the plug by no possibilitycanit spurt or splash through the uppervent 38 and,

furthermore, any acid that might enter the plug will be free to flowbackward again through the vents 39.

It will thus be seen that I produce a very compact, strong, reliable andeiicient bat'- tery cell because of the features of construction setforth herein.y

2. In a storage battery cell, the combina;

tion of a pair of spaced 'binding posts having sharpfrusto-coni'calshouldersI formed thereon intermediate their ends and at the same level,an outwardly projecting flange at the lower 'level of each shoulder, athin conical gasket supported on said flange and embracing the shoulder,a cover having openings to receive said shoulders, the posts being screwthreaded labove the shoulders .and having smooth Atapered upper ends ofreduced diameter, and binding nuts screwed upon the threaded portions ofthe binding posts in engagement with the cover and serving to makeliquid-tight joints between the cover and the shoulders, said nuts beinglocated below the smooth ends or the posts.

PAL M. MARKO.

